Cisco Certified Network Associate (CCNA) Practice Exam

What parameter is necessary to adjust the hello interval or hold time in EIGRP for IPv6?

1. INTERFACE

2. TIME NUMBER

3. AS NUMBER

4. LOWER BANDWIDTH NUMBER

The correct answer is: TIME NUMBER

The correct parameter necessary to adjust the hello interval or hold time in EIGRP for IPv6 is indeed the hello interval and hold time settings specifically, which are typically configured using the command that allows you to define the timing values. When configuring EIGRP for IPv6, it's crucial to set the correct hello interval to ensure that routers can effectively communicate their presence and maintain neighbor relationships. This timing helps with network stability and efficiency since it dictates how often hello packets are sent. The hold time is closely related; it defines the time a router will wait without receiving a hello packet from a neighbor before declaring that neighbor as down. Adjusting these values can help optimize the routers' ability to maintain adjacent relationships, especially in environments where network conditions may require alterations to these timers for performance improvements. The other options focus on different aspects of EIGRP configurations. While the interface might be necessary to specify where the configuration applies, and the AS number is critical for defining the EIGRP domain, they do not directly relate to modifying hello and hold timings. The "lower bandwidth number" option would be relevant in a context of interface capability rather than timing adjustments. Therefore, the parameter that directly facilitates changing the hello interval or hold time is the correct choice.